{
  "timeline": [
    {
      "date": "1902/9",
      "category": "会社設立",
      "region": "",
      "importance": 5,
      "event": "第一生命保険相互会社を設立",
      "detail": "矢野恒太が創設、初代社長は伯爵柳沢保恵。基金20万円",
      "significance": "日本初の相互組織による生命保険会社。加入者保護と合理的経営の先駆",
      "source": "",
      "amount": "基金20万円"
    },
    {
      "date": "1912",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "地方部（後の支部）の設置を本格化",
      "detail": "主要都市への進出",
      "significance": "",
      "source": ""
    },
    {
      "date": "1921",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "業界5大生保入り",
      "detail": "",
      "significance": "",
      "source": ""
    },
    {
      "date": "1932/8",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "保有契約高10億円で業界第2位確保",
      "detail": "",
      "significance": "業界2位の定位置を確立",
      "source": "",
      "amount": "保有契約高10億円"
    },
    {
      "date": "1934",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "結核予防の剰余金100万円を基金に保生会（後の結核予防会母体）を設立",
      "detail": "社会貢献活動の起点",
      "significance": "",
      "source": "",
      "amount": "100万円"
    },
    {
      "date": "1938/11",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "第一生命館（現本社）完成",
      "detail": "東京日比谷",
      "significance": "戦後GHQ接収の象徴となる本社建設",
      "source": ""
    },
    {
      "date": "1944",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "保有契約高100億円到達",
      "detail": "",
      "significance": "戦時下の業容拡大",
      "source": "",
      "amount": "保有契約高100億円"
    },
    {
      "date": "1945/9",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "本社社屋がGHQ連合国軍総司令部庁舎として接収",
      "detail": "戦時資産損害・インフレと合わせて三重苦",
      "significance": "戦後生保経営の困難を象徴する出来事",
      "source": ""
    },
    {
      "date": "1950/1",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "保健文化賞を創設",
      "detail": "保健衛生の向上に功績があった団体・個人を表彰",
      "significance": "",
      "source": ""
    },
    {
      "date": "1951",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "保有契約高1兆円到達",
      "detail": "",
      "significance": "戦後復興期の業容拡大",
      "source": "",
      "amount": "保有契約高1兆円"
    },
    {
      "date": "1959/5",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "心臓血管研究所を設立",
      "detail": "循環器系統の疾患を専門に研究",
      "significance": "",
      "source": ""
    },
    {
      "date": "1963",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "企業年金保険・終身年金保険を発売",
      "detail": "",
      "significance": "年金商品市場への早期参入",
      "source": ""
    },
    {
      "date": "1968/4",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "神奈川県大井町に本社機構の一部を移転",
      "detail": "コンピュータ化に対応した郊外型本社",
      "significance": "事務量増大とコンピュータ化への先手",
      "source": ""
    },
    {
      "date": "1970",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "保有契約高10兆円、世界生保ランキングでベストテン入り",
      "detail": "",
      "significance": "日本の生保が世界的規模に到達した象徴",
      "source": "",
      "amount": "保有契約高10兆円"
    },
    {
      "date": "1972/10",
      "category": "業務提携",
      "region": "",
      "importance": 2,
      "event": "米ジョン・ハンコック生命と国際団体保険制度で業務提携",
      "detail": "創立70周年",
      "significance": "国際業務の本格化",
      "source": ""
    },
    {
      "date": "1974/4",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "「新制度」実施",
      "detail": "営業組織・販売制度を大幅改革",
      "significance": "1970年代の環境変化に対応した営業改革",
      "source": ""
    },
    {
      "date": "1975/1",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "全国支社オンラインシステム稼働",
      "detail": "",
      "significance": "業界大手としてのIT基盤整備",
      "source": ""
    },
    {
      "date": "1982",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "コーポレートメッセージ「一生涯のパートナー」制定",
      "detail": "創立80周年",
      "significance": "生涯サービス型生保モデルの打ち出し",
      "source": ""
    },
    {
      "date": "1986",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "ライフデザインショップ開設・総資産10兆円超",
      "detail": "",
      "significance": "来店型相談店舗は業界初",
      "source": "",
      "amount": "総資産10兆円超"
    },
    {
      "date": "1988/9",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ライフデザイン研究所を設立",
      "detail": "",
      "significance": "",
      "source": ""
    },
    {
      "date": "1990",
      "category": "業務提携",
      "region": "",
      "importance": 2,
      "event": "米リンカーンナショナル保険に資本参加",
      "detail": "",
      "significance": "海外資本提携の継続",
      "source": ""
    },
    {
      "date": "1991",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "総資産20兆円突破",
      "detail": "",
      "significance": "",
      "source": "",
      "amount": "総資産20兆円"
    },
    {
      "date": "2006/12",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "第一フロンティア生命保険を設立",
      "detail": "",
      "significance": "銀行窓販向け貯蓄性商品の受け皿",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/1",
      "category": "企業買収",
      "region": "東南アジア",
      "importance": 2,
      "event": "ベトナムBao Minh CMG Lifeを買収、Dai-ichi Life Vietnamとして子会社化",
      "detail": "",
      "significance": "アジア保険事業への進出",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/12",
      "category": "企業買収",
      "region": "その他",
      "importance": 1,
      "event": "インドのStar Union Dai-ichi Lifeへ出資",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/8",
      "category": "業務提携",
      "region": "その他",
      "importance": 3,
      "event": "豪州Tower Australia Group（現TAL）へ出資・業務提携",
      "detail": "",
      "significance": "後のTAL完全子会社化の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/4",
      "category": "株式上場",
      "region": "",
      "importance": 4,
      "event": "相互会社から株式会社へ組織変更、東証1部上場",
      "detail": "1902年以来の相互会社形態から株式会社へ転換",
      "significance": "業界最大級の相互会社株式会社化事例",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/5",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "豪TAL Groupを完全子会社化",
      "detail": "全株取得",
      "significance": "海外保険子会社の基礎となる案件",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/10",
      "category": "企業買収",
      "region": "東南アジア",
      "importance": 2,
      "event": "インドネシアPT Panin Lifeに出資し関連会社化",
      "detail": "",
      "significance": "東南アジア事業の拡大",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/8",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "損保ジャパン・DIY生命（現ネオファースト生命）を子会社化",
      "detail": "",
      "significance": "国内複数チャネル戦略の整備",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/2",
      "category": "企業買収",
      "region": "米州",
      "importance": 5,
      "event": "米Protective Life Corporation（PLC）を完全子会社化",
      "detail": "",
      "significance": "当時の国内生保による米国保険会社買収として最大規模",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/6",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "稲垣精二が社長就任",
      "detail": "",
      "significance": "",
      "source": ""
    },
    {
      "date": "2016/10",
      "category": "組織再編",
      "region": "",
      "importance": 4,
      "event": "商号を第一生命ホールディングスに変更、持株会社へ移行",
      "detail": "",
      "significance": "保険・AM・非保険サービスを並列運営する構造の制度化",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/3",
      "category": "",
      "region": "東南アジア",
      "importance": 1,
      "event": "カンボジアでDai-ichi Life Cambodiaを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/5",
      "category": "",
      "region": "東南アジア",
      "importance": 1,
      "event": "ミャンマーでDai-ichi Life Myanmarを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/12",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "英領バミューダDai-ichi Life Reinsurance Bermudaを子会社化",
      "detail": "",
      "significance": "再保険ビークルの設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/4",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "第一スマート少額短期保険が営業開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "category": "株式上場",
      "region": "",
      "importance": 2,
      "event": "東証市場区分見直しでプライム市場へ移行",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/11",
      "category": "企業買収",
      "region": "その他",
      "importance": 3,
      "event": "ニュージーランドのPartners Group Holdingsを子会社化",
      "detail": "",
      "significance": "海外保険M&Aの継続",
      "source": "有価証券報告書"
    },
    {
      "date": "2022",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "菊田徹也が代表取締役社長グループCEOに就任",
      "detail": "",
      "significance": "戦略投資3,000億円枠を率いる体制に",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/1",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "アイペットHD（現アイペット損害保険）を株式公開買付けで子会社化",
      "detail": "",
      "significance": "ペット保険への参入",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/3",
      "category": "企業買収",
      "region": "",
      "importance": 5,
      "event": "ベネフィット・ワンを株式公開買付けで買収、同5月に子会社化",
      "detail": "福利厚生代行業界最大手",
      "significance": "非保険サービスへの本格参入を決定づけた大型案件",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "経常収益9.87兆円、経常利益7,191億円、純利益4,296億円",
      "detail": "",
      "significance": "M&Aの利益貢献と金利上昇局面の寄与で増益",
      "source": "有価証券報告書",
      "amount": "経常収益9兆8,732億円、純利益4,296億円"
    },
    {
      "date": "2025/6",
      "category": "経営計画",
      "region": "",
      "importance": 4,
      "event": "修正ROE目標を10％から12％以上に引き上げ、配当性向を45％へ",
      "detail": "総還元性向50％は維持",
      "significance": "自己株式取得縮小・配当還元強化への方針転換",
      "source": "IR",
      "amount": "修正ROE 12％以上、配当性向45％"
    }
  ]
}